Revival of Degraded CsPbI3 Nanocrystals by Diselenide Ligand and Nanocrystal Self-Assembly on Nanofibrilar Ligand Template.

Among the lead halide perovskite (LHP) family, CsPbI3 is known to be significantly vulnerable to moisture, which hinders its use in real device applications. It is reported that chalcogen-based ligands can better stabilize CsPbI3 and revive nanocrystals (NCs). Here, diphenyl diselenide (DPhDSe) ligand is used to revive the degraded CsPbI3 NCs through a post-synthetic treatment of adding a small amount of DPhDSe in the degraded NC dispersion. DPhDSe in the dispersion formed nanofibrillar crystals at a low temperature through the π-π stacking of the phenyl ring. The nanofibrils played as a template on which the NCs self-assembled and they are attached side-by-side to form microfibers. The microfiber powder containing the NCs is optically stable at ambient conditions and morphologically self-healable by mild thermal annealing due to the dynamic Se─Se bond. The mechanism of the structural changes, optical transitions, and chemical changes has been systematically characterized through electron microscopy, diffraction, spectroscopy, and elemental analysis.

Friendship Homophily Trajectories among Asian American Youth from High School to College.

Friendship racial homophily, the tendency to form friendships with individuals who share the same racial background, is a normative developmental phenomenon that holds particular significance for youth of color in a racialized society. Yet, there exists a paucity of longitudinal research elucidating the stability and change of friendship racial composition across developmental span. This study aimed to examine the friendship racial homophily trajectories over a six-year period encompassing four time points. The sample comprised 437 Asian American youth (MAge = 16.52, SDAge = 1.36, 53% female), with 197 Filipino and 240 Korean participants. Using logistic multilevel modeling analyses, it was found that both Filipino and Korean American youth demonstrated an increase in friendship racial homophily from high school to college, but that Filipino youth overall reported lower levels of racial homophily compared to their Korean counterparts. The study findings also pinpointed several influential factors impacting these trajectories, including proficiency in heritage languages, ethnic identity, and encounters with racial discrimination from both White Americans and other People of Color. These results highlight the continuous evolution of friendship racial composition from high school to college and emphasize the crucial role of ethnic identity and experiences of discrimination in influencing these dynamics, with ethnic identity exerting more enduring effects and experiences of discrimination showing more situational impacts on the levels of racial homophily.

Parental socialization of mental health in Chinese American families: What parents say and do, and how youth make meaning.

Parental mental health socialization is a process by which parents shape how youth develop and maintain beliefs, attitudes, and behaviors regarding mental health and help-seeking behaviors. Although culture shapes parental mental health socialization, few studies have examined specific parental socialization practices regarding mental health and help-seeking, especially as a culturally anchored process. Using a qualitative approach, this study explores youth-reported parental socialization of mental health within Chinese American families by examining focus group data from 69 Chinese American high school and college students. Findings revealed that youth received parental messages that conveyed culturally anchored conceptualizations of mental health that included stigmatized views of mental illness and perceptions of mental distress as not a legitimate problem. Parents responded to youth distress in culturally consonant ways: by encouraging culturally specific coping methods, dismissing or minimizing distress, or responding with silence. Youth engaged in the active interpretation of parental messages through cultural brokering, bridging the gap between their parents' messages and mainstream notions of mental health and help-seeking. Overall, our findings point to the significant role of culture in parental mental health socialization in Chinese American families and the need to integrate culturally specific understandings of mental health into future interventions for Asian American youth.

Parental Academic Socialization and Youth Adjustments: A Comparison of Korean Youth in South Korea, China, and the United States.

Although parental academic socialization may be a product of culture, ethnic/racial minority status may play a significant role, above and beyond the impact of culture, in shaping parental academic socialization and its implications for youth adjustments. This study examined Korean youth living in South Korea (N = 524, Mage = 14.98, SD = 1.45, 50.1% female), China (N = 267, Mage = 15.24, SD = 1.66, 58.9% female), and the U.S. (N = 408, Mage = 14.76, SD = 1.91, 47.3% female) who share the same heritage culture but have different social positions (majority or minority). Korean youth as an ethnic/racial minority in the U.S. or China reported higher parental academic socialization than those in South Korea, supporting a significant role of social positions in how parents practice academic socialization. This study also found that the distinct practices of academic socialization function differently in youth adjustment. Parental commitment to education, parental involvement, and autonomy support were positively associated with youth's school engagement, but achievement-oriented psychological control was associated with more depressive symptoms and antisocial behaviors. These associations did not differ across the three samples. Some nuanced differences also emerged. Parental commitment to education was associated with higher grades in Korean Chinese (but not Korean American) youth, and achievement-oriented psychological control was associated with lower school engagement among Korean Chinese (but not South Korean) youth and higher grades among South Korean (but not Korean American) youth. These findings highlight the role of academic socialization as an adaptive strategy for ethnic/racial minorities to succeed in host societies and the generally universal role of parental academic socialization in youth adjustments.

Ethnic-Racial Socialization, Ethnic-Racial Identity, and Depressive Symptoms in Korean Adolescents in the United States and China.

The United States and China are top two receiving countries of Korean immigrants in modern history. Minority families in ethnically-racially diverse societies, such as the US and China, use various ethnic-racial socialization practices (cultural socialization, promotion of mistrust, preparation for bias) to help their children navigate the world, yet research in non-U.S. contexts is scarce. To examine the specificity versus generalizability of ethnic-racial socialization and its implications, this study compared the prevalence of ethnic-racial socialization reported by Korean American (n = 408; Mage = 14.76, SD = 1.91; 48.30% female) and Korean Chinese (n = 267; Mage = 15.24, SD = 1.66; 58.90% female) youth. Moreover, this study examined how various ethnic-racial socialization practices relate to the youth's ethnic-racial identity, and subsequently, depressive symptoms. Although Korean American youth reported more frequent ethnic-racial socialization compared to their Korean Chinese counterparts, cultural socialization (but not preparation for bias nor promotion of mistrust) had a comparable negative indirect association with depressive symptoms via ethnic-racial identity across both groups. Thus, although the rates of parental ethnic-racial socialization are context-specific, parental cultural socialization may be similarly beneficial for Korean ethnic-racial minority youth's identity development, and in turn, psychological outcomes, whether in a Western individualistic society or an Eastern collectivistic society.

Racial discrimination and the moderating effects of racial and ethnic socialization on the mental health of Asian American youth.

This study investigates trajectories of racial discrimination, racial and ethnic socialization (RES), and their interaction effects with social positions (nativity and gender) on mental health. A longitudinal study of 786 Filipino American (FA) and Korean American (KA) youth from the Midwestern United States (Mage.Wave1  = 15) confirmed that discrimination increased and significantly contributed to the upward trend of mental health distress, whereas the impact of RES differed by its type and by ethnicity. For example, promotion of mistrust and ethnic-heritage socialization were protective among U.S.-born FA youth, but for KA youth, preparation for bias was protective regardless of nativity and gender. This study highlights the importance of considering social positions to better understand the role of RES in youth psychological adjustment.

Racial Stereotypes and Asian American Youth Paradox.

Asian Americans are simultaneously stereotyped as a perpetual foreigner and a model minority. This cross-sectional study of 308 Filipino American youth (mean age 18 years; 47% emerging adult; 72% U.S.-born; 57% female) and 340 Korean American youth (mean age 18 years; 39% emerging adult; 59% U.S.-born; 49% female) is the first to investigate both the direct and interactive effects of these seemingly opposite stereotypes on internalizing and externalizing outcomes, and how these relations differ by ethnicity, age group (adolescence vs. emerging adulthood), and nativity (foreign-born vs. U.S.-born). The results confirm that the perpetual foreigner stereotype predicts more internalizing problems, whereas aspects of the model minority stereotype (i.e., achievement orientation and unrestricted mobility) had different effects by ethnicity. Those who deeply internalize the model minority stereotype were found to be particularly vulnerable. Furthermore, the interactive effects of these stereotypes were more prominent during emerging adulthood than in adolescence, regardless of ethnicity. These nuanced and complex mechanisms need to be thoroughly understood in order to develop appropriate and effective public health or school interventions that can support Asian American young people in dealing with the harmful effects of racial stereotypes.

Automotive augmented reality 3D head-up display based on light-field rendering with eye-tracking.

We explore the feasibility of implementing stereoscopy-based 3D images with an eye-tracking-based light-field display and actual head-up display optics for automotive applications. We translate the driver's eye position into the virtual eyebox plane via a "light-weight" equation to replace the actual optics with an effective lens model, and we implement a light-field rendering algorithm using the model-processed eye-tracking data. Furthermore, our experimental results with a prototype closely match our ray-tracing simulations in terms of designed viewing conditions and low-crosstalk margin width. The prototype successfully delivers virtual images with a field of view of 10° × 5° and static crosstalk of <1.5%.

Racial discrimination, ethnic-racial socialization, and cultural identities among Asian American youths.

OBJECTIVES: This study investigates whether and how racial discrimination is associated with ethnic-racial socialization in the family and how distinct aspects of ethnic-racial socialization influence children's ethnic and American identity among Filipino American and Korean American families. METHOD: The data are obtained from the Midwest Longitudinal Study of Asian American Families Project (N = 1,580; 379 Filipino American youths and 377 parents, and 410 Korean American youths and 414 parents; Mage of youths = 15.01). Using the bootstrapping and maximum likelihood with missing values approaches, we conducted path analyses to test the hypothesized associations concurrently and longitudinally for each ethnic group. RESULTS: Youth-reported racial discrimination was directly associated with weaker American identity, both concurrently and longitudinally. In concurrent models, racial discrimination experienced by both youth and parents was positively associated with youth-reported preparation for bias, which in turn was linked with stronger ethnic identity among Filipinos, whereas no indirect pathways reached statistical significance among Koreans. In longitudinal models, parent-reported discrimination was linked with higher levels of promotion of mistrust among both groups, which predicted weaker ethnic identity among Filipino youth but stronger American identity among Korean youth. CONCLUSIONS: The present study highlights how exposure to racial discrimination may have a lasting influence in cultural identity development among Asian Americans and possibly through ethnic-racial socialization in the family, which might have been shaped by such experiences. Our results also underscore the importance of considering the experiences of both children and parents in studies of discrimination and ethnic-racial socialization. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Explaining the Asian American Youth Paradox: Universal Factors versus Asian American Family Process Among Filipino and Korean American Youth.

This study used longitudinal survey data of Filipino American and Korean American youth to examine ways in which universal factors (e.g., peer antisocial behaviors and parent-child conflict) and Asian American (AA) family process variables (e.g., gendered norms) independently and collectively predict grade point average (GPA), externalizing, and internalizing problems. We aimed to explain the "Asian American youth paradox" in which low externalizing problems and high GPA coexist with high internalizing problems. We found that universal factors were extensively predictive of youth problems and remained robust when AA family process was accounted for. AA family process also independently explained youth development and, in part, the AA youth paradox. For example, gendered norms increased mental distress. Academic controls did the opposite of what it is intended, that is, had a negative impact on GPA as well as other developmental domains. Family obligation, assessed by family-centered activities and helping out, was beneficial to both externalizing and internalizing youth outcomes. Parental implicit affection, one of the distinct traits of AA parenting, was beneficial, particularly for GPA. This study provided important empirical evidence that can guide cross-cultural parenting and meaningfully inform intervention programs for AA youth.

Este estudio utilizó datos de una encuesta longitudinal de jóvenes filipinoamericanos y coreanoamericanos para analizar las maneras en las que los factores universales (p. ej.:las conductas antisociales entre pares y el conflicto entre padres e hijos) y las variables de los procesos familiares asiáticoamericanos (p. ej.: las normas de género) predicen independientemente y colectivamente el promedio de calificaciones y los problemas interiorizados y exteriorizados. Nos propusimos explicar la "paradoja de los jóvenes asiáticoamericanos" en la cual un bajo grado de problemas exteriorizados y un alto promedio de calificaciones coexisten con un alto grado de problemas interiorizados. Descubrimos que los factores universales fueron en gran parte predictivos de los problemas de los jóvenes y se mantuvieron firmes cuando se tuvo en cuenta el proceso familiar asiáticoamericano. El proceso familiar asiáticoamericano también explicó independientemente el desarrollo de los jóvenes y, en parte, la paradoja de los jóvenes asiáticoamericanos. Por ejemplo, las normas de género aumentaron el distrés mental. Los controles académicos hicieron lo opuesto a lo deseado, por ejemplo, tuvieron un efecto negativo en el promedio de calificaciones así como en otras áreas del desarrollo. La obligación familiar, evaluada por actividades centradas en la familia y por la colaboración, fue beneficiosa tanto para los resultados exteriorizados como interiorizados de los jóvenes. El afecto implícito de los padres, uno de los rasgos distintivos de la crianza de los asiáticoamericanos, fue beneficioso, particularmente para el promedio de calificaciones. Este estudio ofreció importante conocimiento empírico que puede guiar la crianza intercultural y respaldar de manera significativa programas de intervención para jóvenes asiáticoamericanos.

Disempowering Parenting and Mental Health among Asian American Youth: Immigration and Ethnicity.

Guided by the concept of ABCDG (Abusive, Burdening, Culturally Disjointed, Disengaged, and Gender Prescriptive) parenting, this study investigated how subdomains of disempowering parenting adversely influence young people's mental health, independently and collectively, using a large-scale longitudinal survey data of community samples among Filipino American (FA) and Korean American (KA) youth (M AGE =15.01, N=1,580; 391 FA and 417 KA families). Regression results showed that the subdomains of disempowering parenting, while individually harmful, were differentially associated with mental health. For example, abusive and disengaged parenting and culturally disjointed parenting (a.k.a. intergenerational cultural conflict) were the most notably adverse subdomains and remained significant when all subdomains were accounted together. This study pinpoints specific aspects of disempowering parenting that may lead to mental distress among FA and KA youth and underscores a need for culturally tailored intervention programs that address the harms of disempowering parenting approaches.

Autostereoscopic 3D display using directional subpixel rendering.

In this paper we present an autostereoscopic 3D display using a directional subpixel rendering algorithm in which clear left-right images are expressed in real time based on a viewer's 3D eye positions. In order to maintain the 3D image quality over a wide viewing range, we designed an optical layer that generates a uniformly distributed light field. The proposed 3D rendering method is simple, and each pixel processing can be performed independently in parallel computing environments. To prove the effectiveness of our display system, we implemented 31.5" 3D monitor and 10.1" 3D tablet prototypes in which the 3D rendering is processed in the GPU and FPGA board, respectively.

Culture and Family Process: Measures of Familism for Filipino and Korean American Parents.

This study tests the psychometric properties of multiple survey items and scales that are either underused or newly developed to assess familism among Asian Americans. Using data collected from 150 Filipino and 188 Korean American parents (mostly mothers) in the Midwest region in 2013, the measures were examined for validity and reliability for each group and, when appropriate, for cross-cultural equivalence across the groups. Several scales and their items showed high quality psychometric properties and are ready for use to more accurately assess family process of each target group and to conduct comparative analyses. The findings also show that, contrary to the expectation, Filipino American families express more traditional aspects of familism than do Korean American families, and are more likely to reinforce traditional familism beliefs and behaviors among their children. This study reinforces a need for more empirical- and subgroup-specific research effort.

Explicating Acculturation Strategies among Asian American Youth: Subtypes and Correlates across Filipino and Korean Americans.

Acculturation strategy, a varying combination of heritage and mainstream cultural orientations and one of the significant determinants of youth development, has been understudied with Asian American youth and particularly at a subgroup-specific level. This study used person-oriented latent profile analysis (LPA) to identify acculturation strategy subtypes among Filipino American and Korean American adolescents living in the Midwest. Associations between the subtypes and numerous correlates including demographics, family process and youth outcomes were also examined. Using large scale survey data (N = 1580; 379 Filipino American youth and 377 parents, and 410 Korean American youth and 414 parents; MAGE of youth = 15.01), the study found three acculturation subtypes for Filipino American youth: High Assimilation with Ethnic Identity, Integrated Bicultural with Strongest Ethnic Identity, and Modest Bicultural with Strong Ethnic Identity; and three acculturation subtypes for Korean American youth: Separation, Integrated Bicultural, and Modest Bicultural with Strong Ethnic Identity. Both Filipino American and Korean American youth exhibited immersion in the host culture while retaining a strong heritage identity. Although bicultural strategies appear most favorable, the results varied by gender and ethnicity, e.g., integrated bicultural Filipino Americans, comprised of more girls, might do well at school but were at risk of poor mental health. Korean American separation, comprised of more boys, demonstrated a small but significant risk in family process and substance use behaviors that merits in-depth examination. The findings deepen the understanding of heterogeneous acculturation strategies among Asian American youth and provide implications for future research.

Impact of youth cultural orientation on perception of family process and development among Korean Americans.

OBJECTIVES: This study examined how cultural orientations influence youth perception of family processes in Korean American families and how these family processes, in turn, predict depressive symptoms and antisocial behaviors among youth. Family processes were examined separately for maternal and paternal variables. METHOD: This study used survey data from Korean American families living in the Midwest (256 youth and their parents) across 2 time periods, spanned over a year. At the time of the first interview, the average age of youth was 13 (SD = 1.00). Using structural equation modeling, this study tested the hypothesized associations concurrently, longitudinally, and accounting for earlier outcomes. RESULTS AND CONCLUSION: Results show that identity and behavioral enculturation in one's heritage culture are predictors of bonding with parents, which is notably protective for youth. The results highlight the critical effect of enculturation in enhancing youth perception of the parent-child relationship. Behavioral acculturation to mainstream culture, in contrast, predicts youth problems, although the effect may not necessarily always be via family processes. Similarly, Korean and English language proficiencies predict fewer youth problems, but not always by way of family processes. A few differences emerged across maternal and paternal variables, although there was much commonality in the hypothesized relationships. (PsycINFO Database Record

Extent and Impact of Opioid Prescribing for Acute Occupational Low Back Pain in the Emergency Department.

BACKGROUND: Initial management of acute occupational low back pain (AOLBP) commonly occurs in the emergency department (ED), where opioid prescribing can vary from the clinical guidelines that recommend limited use. OBJECTIVE: The objective of this study was to explore how opioids are prescribed in the ED and the impact on work disability and other outcomes in AOLBP. METHODS: A retrospective cohort study was conducted. All acute compensable lost-time LBP cases seen initially in the ED with a date of injury from January 1, 2009 to December 31, 2011 were identified within a nationally representative Workers' Compensation dataset. Multivariate models estimated the effect of early opioids (received within 2 days of ED visit) on disability duration, long-term opioid use, total medical costs, and subsequent surgeries. RESULTS: Of the cohort (N = 2887), 12% received early opioids; controlling for severity, this was significantly associated with long-term opioid use (adjusted risk ratio = 1.29; 95% confidence interval 1.05-1.58) and increased total medical costs for those in the highest opioid dosage quartile, but not associated with disability duration or subsequent low back surgery. CONCLUSIONS: Early opioid prescribing in the ED for uncomplicated AOLBP increased long-term opioid use and medical costs, and should be discouraged, as opioid use for low back pain has been associated with a variety of adverse outcomes. However, ED providers may be becoming more compliant with current LBP treatment guidelines.

Advancing Understanding of Acculturation for Adolescents of Asian Immigrants: Person-Oriented Analysis of Acculturation Strategy Among Korean American Youth.

Acculturation strategy, a significant predictor of immigrant adaptation, has been under-studied with Asian Americans, in particular, Asian American youth. Using person-oriented latent profile analysis, this study identified acculturation strategies among Korean American early adolescents living in the Midwest. Two-hundred ninety-one families were interviewed in 2007 that included 220 youth (mean age 13, 47.7 % female), along with 272 mothers and 164 fathers (N = 656). They were re-interviewed in 2008 (N = 588). The study found three distinct acculturation strategies: separation (11.8 %, n = 26), integrated bicultural (66.9 %, n = 150), and modest bicultural (21.3 %, n = 44). Integrated bicultural youth reported the strongest sense of ethnic identity and the most favorable characteristics, providing empirical support for the benefit of biculturalism. The findings further suggest that separation may not be as detrimental as previously thought, and modest bicultural-biculturalism that is not fully developed-may in fact be less desirable among Korean American youth.

A Pathway to Positive Youth Development: Unpacking the Asian American Youth Paradox and Cultural Orientations among Filipino American and Korean American Youth.

This study used longitudinal survey data of Filipino American and Korean American youth in the Chicago Metropolitan area (N = 786, MAGE = 15.00, SD = 1.91 at Wave 1 in 2014) to examine whether and how a set of organized predictors (i.e., universal predictors of youth outcomes and cultural orientations) independently and collectively explains internalizing and externalizing problems and academic performance. The results were that universal predictors such as youth antisocial beliefs, peer antisocial behaviors, and the quality of parent-child relations, were extensively predictive of youth outcomes in the expected directions. The magnitudes of universal predictors were largely unchanged when bilinear and multidimensional cultural orientation variables were accounted for together. The magnitudes of cultural orientation variables were slightly attenuated in full models but showed independent associations with youth outcomes. Specifically, English and heritage language proficiencies were protective of externalizing and internalizing problems. Behavioral practices in respective cultures increased youth problems. In addition, ethnic identity, although beneficial to mental health, can increase externalizing problems. The findings of this study provide insights into understanding the mixed outcomes among Asian Americans and important empirical evidence that can inform intervention programs to prevent youth problems, ultimately toward a pathway to positive youth development among Asian American youth.

Acculturation, Enculturation, Culture-Specific Emotional Distress, and Parenting Among Korean Immigrant Mothers.

This study examined how Korean immigrant mothers' cultural orientations (i.e., acculturation and enculturation) were related to their mental health, specifically depression and the culturally specific syndrome of Hwa-byung (HB), and had direct and indirect relations to their parenting practices (i.e., authoritative, authoritarian, acceptance, rejection). In a sample of 412 Korean immigrant mothers (99.5% foreign-born; Mage = 45.31), a path analysis was conducted by using the maximum-likelihood and bootstrapping methods. Results revealed that mothers' cultural orientations were indirectly related to parenting practices via depression and HB. Specifically, mothers' acculturation and enculturation had positive indirect relationships to authoritative parenting and acceptance versus a negative relationship to rejection, via their links to depression. Mothers' acculturation had a negative relationship to rejection via its link to HB, while enculturation was not related to HB. Additionally, cultural orientations were directly associated with parenting. Overall, the current findings highlighted that HB holds a unique role in parenting after controlling for the effects of depression, which suggests the importance of assessing culture specific syndrome, above and beyond depression, to have a better understanding of Korean immigrant mothers' mental health and its relation to parenting. Implications for research and practice are discussed.

Improvement in the breakdown properties of electrowetting using polyelectrolyte ionic solution.

We report the improvement in the breakdown properties of electrowetting using a mixture of poly(acrylic acid) (PAA) polyelectrolyte and a surfactant (Tween 80, TW80). Onset of breakdown was initially determined via visual observation and further verified by investigating impedance phase shift. Breakdown characteristics of the large-molecule ionic solution were compared with those of conventional electrolytes (Na(2)SO(4)) that produce small molecules. Experiments with various conductivities and hydrophobic coatings on a thin silicon nitride dielectric layer (∼500 Å) showed that the breakdown voltage of the PAA-TW80 system was at least two times higher than that of the Na(2)SO(4)-TW80 system. Our results demonstrate that defects in the dielectric and hydrophobic layers are less vulnerable to larger ionic molecules.